CN208421386U - Amasthenic lens based on calcium fluoride crystal - Google Patents
Amasthenic lens based on calcium fluoride crystal Download PDFInfo
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- CN208421386U CN208421386U CN201821279352.5U CN201821279352U CN208421386U CN 208421386 U CN208421386 U CN 208421386U CN 201821279352 U CN201821279352 U CN 201821279352U CN 208421386 U CN208421386 U CN 208421386U
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Abstract
Amasthenic lens based on calcium fluoride crystal.Present ultraviolet condenser lens is mainly solved using various glass materials as optical material, transmitance is lower, the lesser problem of transparent aperture.It is characterized by: first lens are biconvex lens, second lens are positive meniscus lens, the third lens are positive meniscus lens, and the 4th lens are positive meniscus lens, and first lens, the second lens, the third lens and the 4th lens are made of calcium fluoride crystal.The utility model provides the amasthenic lens based on calcium fluoride crystal, replaces traditional optical elements with calcium fluoride crystal, transmitance is higher, and transparent aperture is larger.
Description
Technical field
The utility model relates to ultraviolet optics technical field of imaging, in particular to based on the amasthenic lens of calcium fluoride crystal.
Background technique
Ultraviolet light imaging system is widely used in the fields such as chemistry, material, medicine, electric power, is used for fluorescence detection and height
Press corona detection etc..Since ultraviolet light beam is more strong by Atmospheric Absorption, the ultraviolet light beam energy of optical system is reached usually very
It is weak.It is highly sensitive in order to obtain ultraviolet imagery system, need ultraviolet amasthenic lens that there is large-numerical aperture and high transmittance.
Current existing ultraviolet condenser lens is strong as optical material UV absorption using various glass materials, and counts greatly
Value aperture optical system needs more optical element again, this makes existing ultraviolet imagery system transmitance lower, loophole
Diameter is smaller.
Utility model content
In order to overcome the shortcomings of background technique, the utility model provides the amasthenic lens based on calcium fluoride crystal, main to solve
Present ultraviolet condenser lens of having determined is using various glass materials as optical material, and transmitance is lower, and transparent aperture is lesser to ask
Topic.
The technical scheme adopted by the utility model is
Amasthenic lens based on calcium fluoride crystal, along optical axis by object side to image side sequentially include the first lens, second thoroughly
Mirror, the third lens and the 4th lens, first lens are biconvex lens, and second lens are positive meniscus lens, described the
Three lens be positive meniscus lens, the 4th lens be positive meniscus lens, first lens, the second lens, the third lens and
4th lens are made of calcium fluoride crystal.
First lens include the first face that light beam is injected and the second face that light beam projects, the curvature half in first face
Radius of curvature of the diameter less than the second face.
First face is spherical surface, radius of curvature 114.52mm；Second face is spherical surface, and radius of curvature is
540.8mm。
First focal length of lens is 218.06mm, center thickness 7.54mm, clear aperature 23mm.
Second focal length of lens is 212.08mm, center thickness 2.6mm, clear aperature 22.4mm, described second
Lens include the third face that light beam is injected and the fourth face that light beam projects, and the third face is spherical surface, and radius of curvature is
61.63mm；The fourth face is spherical surface, radius of curvature 183.37mm.
The third lens focal length is 208.02mm, center thickness 2.6mm, clear aperature 21.7mm；The third
Lens include the 5th face that light beam is injected and the 6th face that light beam projects, wherein the 5th face is spherical surface, radius of curvature is
41.32mm；Wherein the 6th face is spherical surface, radius of curvature 74.61mm.
4th focal length of lens is 212.64mm, center thickness 4mm, clear aperature 20.6mm；Described 4th thoroughly
Mirror includes the 7th face that light beam is injected and the octahedral that light beam projects, the 7th face spherical surface, radius of curvature 29.91mm；
The octahedral is spherical surface, radius of curvature 42.41mm.
The center of first lens and the second lens is away from for 0.3mm, in second lens and the third lens
The heart is away from for 0.3mm, and the centers of the third lens and the 4th lens is away from for 0.5mm.
The beneficial effects of the utility model are: the utility model provides the amasthenic lens based on calcium fluoride crystal, with fluorination
Calcium crystal replaces traditional optical elements, and transmitance is higher, and transparent aperture is larger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Fig. 2 is the focal beam spot of the utility model one embodiment.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing: as shown, the focus lamp based on calcium fluoride crystal
Head by object side to image side sequentially includes the first lens 1, the second lens 2, the third lens 3 and the 4th lens 4 along optical axis, described
First lens be biconvex lens, second lens be positive meniscus lens, the third lens be positive meniscus lens, the described 4th
Lens are positive meniscus lens, and first lens, the second lens, the third lens and the 4th lens are made of calcium fluoride crystal.
The utility model provide the amasthenic lens based on calcium fluoride crystal, with calcium fluoride crystal replace traditional optical elements, transmitance compared with
Height, transparent aperture are larger.
In the present embodiment, as shown, first lens include that the first face 11 that light beam is injected and light beam project
Second face 12, the radius of curvature of the radius of curvature in first face less than the second face.
In the present embodiment, as shown, first face is spherical surface, radius of curvature 114.52mm；Described second
Face is spherical surface, radius of curvature 540.8mm.
In the present embodiment, as shown, first focal length of lens is 218.06mm, center thickness 7.54mm, lead to
Light aperture is 23mm.
In the present embodiment, as shown, second focal length of lens is 212.08mm, center thickness 2.6mm, light passing
Aperture is 22.4mm, and second lens include the third face 21 that light beam is injected and the fourth face 22 that light beam projects, the third
Face is spherical surface, radius of curvature 61.63mm；The fourth face is spherical surface, radius of curvature 183.37mm.
In the present embodiment, as shown, the third lens focal length is 208.02mm, center thickness 2.6mm, light passing
Aperture is 21.7mm；The third lens include the 5th face 31 that light beam is injected and the 6th face 32 that light beam projects, wherein the 5th
Face 31 is spherical surface, radius of curvature 41.32mm；Wherein the 6th face 32 is spherical surface, radius of curvature 74.61mm.
In the present embodiment, as shown, the 4th focal length of lens is 212.64mm, center thickness 4mm, light hole
Diameter is 20.6mm；4th lens include the 7th face 41 that light beam is injected and the octahedral 42 that light beam projects, the 7th face
41 spherical surfaces, radius of curvature 29.91mm；The octahedral is spherical surface, radius of curvature 42.41mm.
Further, the first ~ the 4th lens plate anti-reflection film, single side transmitance > 99.5%, the optics to 250nm two waveband
System entirety transmitance > 85%.
The application replaces traditional optical elements with calcium fluoride crystal, so that camera lens is greater than 85% in 250nm wave band transmitance, mirror
Head clear aperature 23mm, focal length 50mm, NA value reach 0.22.After the ultraviolet directional light of 250nm is incident, the wavefront distortion of camera lens introducing
RMS value is less than 22.3nm.Imaging facula is as shown in Fig. 2, 85% energy concentrates in the circle domain of diameter 3.1um.
In the present embodiment, as shown, the center of first lens and the second lens is away from for 0.3mm, described second
The center of lens and the third lens is away from being 0.3mm, and the centers of the third lens and the 4th lens is away from for 0.5mm.
In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and should not be understood as pair
The limitation of the utility model.Embodiment is not construed as limitations of the present invention, but any spirit based on the utility model
Improvements introduced should be all within the protection scope of the utility model.
Claims (8)
1. the amasthenic lens based on calcium fluoride crystal, along optical axis by object side to image side sequentially include the first lens (1), second thoroughly
Mirror (2), the third lens (3) and the 4th lens (4), it is characterised in that:
First lens are biconvex lens, and second lens are positive meniscus lens, and the third lens are positive meniscus lens,
4th lens are positive meniscus lens, and first lens, the second lens, the third lens and the 4th lens are by calcirm-fluoride crystalline substance
System at.
2. the amasthenic lens according to claim 1 based on calcium fluoride crystal, it is characterised in that: first lens include
Second face (12) in the first face (11) and light beam injection that light beam is injected, the song of the radius of curvature in first face less than the second face
Rate radius.
3. the amasthenic lens according to claim 2 based on calcium fluoride crystal, it is characterised in that: first face is ball
Face, radius of curvature 114.52mm；Second face is spherical surface, radius of curvature 540.8mm.
4. the amasthenic lens according to claim 3 based on calcium fluoride crystal, it is characterised in that: first focal length of lens
For 218.06mm, center thickness 7.54mm, clear aperature 23mm.
5. the amasthenic lens according to claim 4 based on calcium fluoride crystal, it is characterised in that: second focal length of lens
For 212.08mm, center thickness 2.6mm, clear aperature 22.4mm, second lens include the third face that light beam is injected
(21) and the fourth face (22) of light beam injection, the third face are spherical surface, radius of curvature 61.63mm；The fourth face is
Spherical surface, radius of curvature 183.37mm.
6. the amasthenic lens according to claim 5 based on calcium fluoride crystal, it is characterised in that: the third lens focal length
For 208.02mm, center thickness 2.6mm, clear aperature 21.7mm；The third lens include the 5th face that light beam is injected
(31) and light beam project the 6th face (32), wherein the 5th face (31) be spherical surface, radius of curvature 41.32mm；Wherein the 6th
Face (32) is spherical surface, radius of curvature 74.61mm.
7. the amasthenic lens according to claim 6 based on calcium fluoride crystal, it is characterised in that: the 4th focal length of lens
For 212.64mm, center thickness 4mm, clear aperature 20.6mm；4th lens include the 7th face that light beam is injected
(41) and light beam project octahedral (42), the 7th face (41) spherical surface, radius of curvature 29.91mm；The octahedral
For spherical surface, radius of curvature 42.41mm.
8. the amasthenic lens according to claim 7 based on calcium fluoride crystal, it is characterised in that: first lens and
The center of two lens is away from for 0.3mm, and the centers of second lens and the third lens is away from for 0.3mm, the third lens
With the centers of the 4th lens away from for 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279352.5U CN208421386U (en) | 2018-08-09 | 2018-08-09 | Amasthenic lens based on calcium fluoride crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279352.5U CN208421386U (en) | 2018-08-09 | 2018-08-09 | Amasthenic lens based on calcium fluoride crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208421386U true CN208421386U (en) | 2019-01-22 |
Family
ID=65122087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821279352.5U Active CN208421386U (en) | 2018-08-09 | 2018-08-09 | Amasthenic lens based on calcium fluoride crystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208421386U (en) |
-
2018
- 2018-08-09 CN CN201821279352.5U patent/CN208421386U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Focusing lens based on calcium fluoride crystal Effective date of registration: 20220207 Granted publication date: 20190122 Pledgee: Changjiang Technology sub branch of Qinhuangdao Bank Co.,Ltd. Pledgor: INTRINIC CRYSTAL TECHNOLOGY CO.,LTD. Registration number: Y2022980001386 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230202 Granted publication date: 20190122 Pledgee: Changjiang Technology sub branch of Qinhuangdao Bank Co.,Ltd. Pledgor: INTRINIC CRYSTAL TECHNOLOGY CO.,LTD. Registration number: Y2022980001386 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230323 Address after: 066000 No. 1 Xihu Road, Qinhuangdao Economic and Technological Development Zone, Hebei Province Patentee after: Qinhuangdao Heyi Technology Co.,Ltd. Address before: 066000 No. 1 Xihu Road, Qinhuangdao Economic and Technological Development Zone, Hebei Province Patentee before: INTRINIC CRYSTAL TECHNOLOGY CO.,LTD. |